A vehicle has an engine (26), a power storage device (10), two motor/generators (M/G1, M/G2), a front grille with a shutter, an engine room, a first temperature sensor, a second temperature sensor, and a controller. The shutter changes the amount of air introduced from the front grille into the engine room. The first temperature sensor detects a temperature (Tw) of a coolant of the engine, and outputs the detected coolant temperature to the controller. The second temperature sensor detects an outside air temperature (Te), and outpots the detected outside air temperature to the controller. The controller starts the engine (26) when the coolant temperature is equal to or lower than a threshold value. When the coolant temperature is higher than the threshold value, and the vehicle starts traveling in a first mode with power from the power storage device (10), the controller drives the shutter such that the amount of the air is reduced when the coolant temperature (Tw) is higher than the outside air temperature (Te).

A vehicle has an engine (26), a power storage device (10), two motor/generators (M/G1, M/G2), a front grille with a shutter, an engine room, a first temperature sensor, a second temperature sensor, and a controller. The shutter changes the amount of air introduced from the front grille into the engine room. The first temperature sensor detects a temperature (Tw) of a coolant of the engine, and outputs the detected coolant temperature to the controller. The second temperature sensor detects an outside air temperature (Te), and outpots the detected outside air temperature to the controller. The controller starts the engine (26) when the coolant temperature is equal to or lower than a threshold value. When the coolant temperature is higher than the threshold value, and the vehicle starts traveling in a first mode with power from the power storage device (10), the controller drives the shutter such that the amount of the air is reduced when the coolant temperature (Tw) is higher than the outside air temperature (Te).

A transmission structure of a hybrid electric vehicle (HEV) may include an engine connected to a front wheel of the hybrid vehicle, a planetary gear part connected to the engine, a first motor generator connected to the planetary gear part, an overdrive brake connected to the first motor generator, and a second motor generator connected to a rear wheel of the hybrid vehicle.

A transmission structure of a hybrid electric vehicle (HEV) may include an engine connected to a front wheel of the hybrid vehicle, a planetary gear part connected to the engine, a first motor generator connected to the planetary gear part, an overdrive brake connected to the first motor generator, and a second motor generator connected to a rear wheel of the hybrid vehicle.

When an EV cancellation switch is turned on while a control mode is a CD mode and a traveling mode is an EV traveling mode, when a catalyst temperature is lower than a threshold and when a vehicle speed is lower than a threshold, a controller executes control processing including a step of executing first VVT control, a step of, when the catalyst temperature is higher than or equal to the threshold or when the vehicle speed is higher than or equal to the threshold, executing second VVT control and a step of switching the control mode into a CS mode.

When an EV cancellation switch is turned on while a control mode is a CD mode and a traveling mode is an EV traveling mode, when a catalyst temperature is lower than a threshold and when a vehicle speed is lower than a threshold, a controller executes control processing including a step of executing first VVT control, a step of, when the catalyst temperature is higher than or equal to the threshold or when the vehicle speed is higher than or equal to the threshold, executing second VVT control and a step of switching the control mode into a CS mode.

A transmission apparatus of a hybrid vehicle is provided. The apparatus includes a planetary gear set including a first rotation element connected to an engine, a second rotation element connected to a first motor/generator, and a third rotation element connected to a second motor/generator. An output gear is connected to any one of the second and third rotation elements and a two-way clutch is mounted at the first rotation element. The clutch limits D stage rotation in a first side direction or limits R stage rotation in a second side direction selectively based on a position of a lever. Accordingly, the clutch performs a failsafe function by preventing a shifting stage from being applied to the R stage when the engine is driven.

A hybrid drive system has a battery and a combustion engine for energy sources. The system has a traction motor, a generator, a variable voltage converter (VVC), a motor inverter, a generator inverter, a bus coupling the VVC to the inverters, and a controller. The controller regulates engine speed, motor torque, and generator torque. The engine speed is determined according to a driver torque demand. In normal conditions, 1) the controller regulates the engine speed by modifying a generator torque command, and 2) the bus voltage is regulated using the VVC and battery. When the controller detects a fault in which the battery and VVC become unavailable for regulating the bus voltage, then the controller regulates a motor inverter power output to match a sum of a generator inverter power output and an estimated power loss of the inverters in order to regulate the bus voltage.

A power inverter includes a plurality of power modules each having a power stage encased in a frame that defines an opening. The power modules are stacked in an array with the power stages being spaced apart to define coolant chambers interleaved with the power stages. The openings cooperate to form a manifold cavity extending along a length of the stack and in fluid communication with the chambers. A manifold insert is disposed in the cavity and extends through the openings.

A power inverter includes a plurality of power modules each having a power stage encased in a frame that defines an opening. The power modules are stacked in an array with the power stages being spaced apart to define coolant chambers interleaved with the power stages. The openings cooperate to form a manifold cavity extending along a length of the stack and in fluid communication with the chambers. A manifold insert is disposed in the cavity and extends through the openings.